ornament consisting of a circular rounded protuberance (as on a vault or shield or belt)

source: wordnet30

2

heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together

source: wordnet30

3

A metallic pin with a head, used for uniting two plates or pieces of material together, by passing it through them and then beating or pressing down the point so that it shall spread out and form a second head; a pin or bolt headed or clinched at both ends.

source: webster1913

verb

4

direct one's attention on something

Example:

Please focus on your studies and not on your hobbies

source: wordnet30

5

fasten with a rivet or rivets

source: wordnet30

6

hold (someone's attention)

Example:

The discovery of the skull riveted the paleontologists

source: wordnet30

7

To fasten with a rivet, or with rivets; as, to rivet two pieces of iron.